Hello! 1981 F100
Fleet Mechanic
Joined: Jun 2010
Posts: 1,251
Likes: 8
From: North Carolina
Plus they don't have a drain plug for the transmission, so it can't be the same as the one in the picture with the green goop draining out.
Postmaster
Joined: Nov 2009
Posts: 4,575
Likes: 5
From: Broken Arrow , OK
If it were me, I would have put some ATF in there, and drove it around for a few minutes (or at least let it idle in nuetral for a while)
I have never seen green goo like that come out of a standard tranny.
FTE Legend
Joined: Jul 2010
Posts: 32,875
Likes: 48
From: Northeast, OK
I agree that the truck looks good and I like the unusual color.
I also agree that you are going to want to clean that tranny out. Not sure the best way to do it, but ATF would do it more quickly than 80/90W given its detergent additive and lower viscosity. But, I'm not sure how far I'd drive it with ATF in it.
I also agree that you are going to want to clean that tranny out. Not sure the best way to do it, but ATF would do it more quickly than 80/90W given its detergent additive and lower viscosity. But, I'm not sure how far I'd drive it with ATF in it.
Junior User
Joined: Aug 2007
Posts: 65
Likes: 0
From: NEPA
That is actually the factory location for the FG-44-B motorcraft fuel filter.
I would get the correct metal filter and swap out the aftermarket plastic one if keeping it in the same place.
I did notice that by 1984 they did move it to a threaded type that threads right into the carb fuel bowl.
I would get the correct metal filter and swap out the aftermarket plastic one if keeping it in the same place.
I did notice that by 1984 they did move it to a threaded type that threads right into the carb fuel bowl.
Moderator
Joined: Nov 2007
Posts: 22,415
Likes: 92
From: Denver Metro Area, CO
I personally don't see what the problem is....
Thread Starter
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Freshman User
Joined: Nov 2011
Posts: 48
Likes: 0
From: Greater Seattle Area
Regarding the transmission fluid. I'm hesitant to put ATF or anything light in. I'm going to be changing the trans fluid again in probably about 200 miles. I'll then check it another few hundred after that to see how things are looking. Anything has to be better than what was in there.
There is the standard fuel filter as a screw in on the carb. The big plastic one is there as a temporary measure. I clogged the stock filter with crap from the gas tank. I'm going to keep the extra clear one on for a few tank fulls to be sure everything is running clear and that the tanks aren’t too rusted on the inside.
Going through the paperwork in the glove box, I found the original window sticker:
Any clue as to what the "Exterior Sound Package" is?
There is the standard fuel filter as a screw in on the carb. The big plastic one is there as a temporary measure. I clogged the stock filter with crap from the gas tank. I'm going to keep the extra clear one on for a few tank fulls to be sure everything is running clear and that the tanks aren’t too rusted on the inside.
Going through the paperwork in the glove box, I found the original window sticker:
Any clue as to what the "Exterior Sound Package" is?
Moderator
Joined: Nov 2007
Posts: 22,415
Likes: 92
From: Denver Metro Area, CO
I'd guess extra insulation on the interior side of the firewall, also perhaps insulation in the door panels . Stuff like that.
FTE Legend
Joined: Jul 2010
Posts: 32,875
Likes: 48
From: Northeast, OK
"Exterior sound package" sounds like bells and whistles. 
I understand your reluctance to put anything light in the tranny. But, its going to take several changes to get that stuff out whichever way you go.
I can only guess that the green goo has something to do with water having gotten in, but can't imagine how. Down the shifter?
I understand your reluctance to put anything light in the tranny. But, its going to take several changes to get that stuff out whichever way you go.
I can only guess that the green goo has something to do with water having gotten in, but can't imagine how. Down the shifter?
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Junior User
Joined: Aug 2007
Posts: 65
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From: NEPA
The very possibility (and often reality) of gasoline dripping onto the exhaust manifolds and engine block is obviously a fire hazard. I know I'm not the only person in history that sees the problem here or has ever had to deal with it.
Any time there are rubber hoses with clamps on them, leakage can and will happen. I'd rather not deal with it, so I routed my filter to a much more sane place, nowhere near anything hot or sparking.
Any time there are rubber hoses with clamps on them, leakage can and will happen. I'd rather not deal with it, so I routed my filter to a much more sane place, nowhere near anything hot or sparking.
FTE Legend
Joined: Jul 2010
Posts: 32,875
Likes: 48
From: Northeast, OK
Especially when said rubber hoses and clamps are on the pressure side of the fuel pump. I worry with the factory routing of the metal line on my carb'd 351W since a PO cut the tube and put a hose on from there to the carb. That hose runs right through a nest of plug wires, and since I've actually seen a spark put a pin hole in a hose, albeit a heater hose, I'm nervous.
Fleet Mechanic
Joined: Jul 2011
Posts: 1,916
Likes: 4
The T-18 shift pattern changed to, reverse to the right then down toward the seat in 1976. The NP-435 and the T-18 has the same shift pattern in 1981. One way to tell them apart is the NP-435 is "sync-ed" in all foward gears where the T-18 is only "sync-ed" in second third and fourth.
I think it was the T-19 that was synchronized and the T-18 wasn't. I think the T-19 was also present in the heavier trucks like the 250 and 350's, and that was why it was synchronized.
EDIT: Found a link on Fordification about these transmissions.
Manual Transmission Identification Guide - FORDification.com
Fleet Mechanic
Joined: Jul 2011
Posts: 1,916
Likes: 4
I'm with the others, exterior sound package is probably firewall insulation and insulation below the floormat to help keep road noise out of the cab.
Post Fiend
Joined: Jul 2004
Posts: 8,786
Likes: 28
From: Northern California
1: Exterior Reduced Sound package is indeed sound proofing for inside the cab. There is a sound proofing blanket on the inside firewall, and sound proofing under the carpet or rubber mat.
2: The AM radio was optional in 1981. So it cost them extra even for that.
3: Does this truck get the 20MPG that the EPA has rated for this on the sticker above?
2: The AM radio was optional in 1981. So it cost them extra even for that.
3: Does this truck get the 20MPG that the EPA has rated for this on the sticker above?